# NTSB DEN82DA199: Cessna 175, N9410B, Hulett, WY, September 9, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: September 9, 1982, 16:45 local (22:45 UTC)
- Place: Hulett, WY
- Coordinates: 44.400062, -104.370803 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.4001&lon=-104.3708&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 9, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71111
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82DA199
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71111/pdf
- Page: https://openairdocs.org/ntsb/DEN82DA199

## Analysis

THE PILOT REPORTED THAT DURING FLIGHT THE ENGINE BEGAN TO RUN ROUGH. HE DIVERTED TOWARD A NEARBY AIRSTRIP, BUT WHILE EN ROUTE, THERE WAS A "BANG" AND SMOKE BEGAN ENTERING THE CABIN. AT THAT POINT, HE SHUT OFF THE FUEL, MAGNETOS AND MASTER SWITCH, THEN LOST ABOUT 1000 TO 1200 FT WHILE CLEARING THE SMOKE. HE WAS COMMITTED TO LAND DOWNHILL ON THE STRIP. DURING TOUCHDOWN ON THE ROUGH STRIP AT ABOUT 90 MPH, THE NOSE GEAR FAILED. SUBSEQUENTLY, THE AIRCRAFT NOSED OVER. AN INVESTIGATION REVEALED THAT A CONNECTING ROD HAD FAILED. THE ENGINE HAD EXCEEDED THE MANUFACTURER'S RECOMMENDED TIME-BETWEEN-OVERHAUL (TBO) BY ABOUT 215 HRS. REPORTEDLY, THE ENGINE BORE EVIDENCE OF A HIGH AMOUNT OF WEAR ON MOST MOVING PARTS. THE TEMPERTURE AND ELEVATION WERE ABOUT 75 DEGREES AND 3960 FT.,RESPECTIVELY.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - engine assembly,connecting rod - failure,total (cause)
  - maintenance - inadequate, company/operator management (contributing factor)
  - fuselage,crew compartment - smoke (contributing factor)
- Forced landing, landing - flare/touchdown
- Nose gear collapsed, landing - flare/touchdown
  - airport facilities,runway/landing area condition - downhill (contributing factor)
  - airport facilities,runway/landing area condition - rough/uneven (contributing factor)
  - landing gear,nose gear - overload
  - airspeed - excessive, pilot in command

## Aircraft

- Registration: [N9410B](https://openairdocs.org/deregistered/N9410B-1984-08-20), registration cancelled 1984-08-20, S/N 55210 (OpenAirDocs)
- Reported make and model: CESSNA 175
- Registry model: [Cessna 175](https://openairdocs.org/model/cessna-175) (registry code 2072502) (OpenAirDocs)
- Category: Airplane
- Serial number: 55210
- Airframe hours: 2645
- Engines: CONTINENTAL GO-300A 175 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Bernard Dean Bos
- Registered owner: Bernard Dean Bos
- Departed: BIL, BILLINGS, MT
- Destination: PWK, CHICAGO, IL
- Airport: IPY, Private Airstrip

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 29; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 109 total, 105 in this make and model, 32 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 15 statute miles
- Temperature: 131 °F

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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